DE10256274A1 - Producing method of gas shuttle valve for internal combustion engine involves correctly fitting and permanently bonding valve shaft and thrust section to predetermined length - Google Patents
Producing method of gas shuttle valve for internal combustion engine involves correctly fitting and permanently bonding valve shaft and thrust section to predetermined lengthInfo
- Publication number
- DE10256274A1 DE10256274A1 DE10256274A DE10256274A DE10256274A1 DE 10256274 A1 DE10256274 A1 DE 10256274A1 DE 10256274 A DE10256274 A DE 10256274A DE 10256274 A DE10256274 A DE 10256274A DE 10256274 A1 DE10256274 A1 DE 10256274A1
- Authority
- DE
- Germany
- Prior art keywords
- valve
- parts
- pressure piece
- gas exchange
- connection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/02—Selecting particular materials for valve-members or valve-seats; Valve-members or valve-seats composed of two or more materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/10—Connecting springs to valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/12—Cooling of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/12—Cooling of valves
- F01L3/16—Cooling of valves by means of a fluid flowing through or along valve, e.g. air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/12—Cooling of valves
- F01L3/16—Cooling of valves by means of a fluid flowing through or along valve, e.g. air
- F01L3/18—Liquid cooling of valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/20—Shapes or constructions of valve members, not provided for in preceding subgroups of this group
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2301/00—Using particular materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2301/00—Using particular materials
- F01L2301/02—Using ceramic materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2303/00—Manufacturing of components used in valve arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Geometry (AREA)
- Lift Valve (AREA)
- Details Of Valves (AREA)
- Check Valves (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung eines Gaswechselventils eines Verbrennungsmotors nach dem Oberbegriff des Patentanspruchs 1 sowie ein nach diesem Verfahren hergestelltes Gaswechselventil. The invention relates to a method for producing a Gas exchange valve of an internal combustion engine after Preamble of claim 1 and one according to this method manufactured gas exchange valve.
Gattungsgemäße Gaswechselventile sind in einer Ausbildung als sogenannte Leichtbauventile bekannt. Bei diesen bekannten Ventilen werden zunächst die Einzelteile, aus denen diese bestehen, miteinander verschweißt und sodann erfolgt eine Fertigbearbeitung und zwar insbesondere mit Bezug auf die Länge dieser Ventile. Derart hergestellte Leichtbauventile sind beispielsweise bekannt aus der Veröffentlichung 2000- 01-0906 der Society of Automotive Engineers, Inc.: A New Concept For Steel-Composite Leightweight Valves" von Andreas von Kaenel, Peter Grahle und Marcus Abele der Mahle Ventiltrieb GmbH. Generic gas exchange valves are in training known as so-called lightweight valves. With these Known valves are the individual parts that make up these exist, welded together and then one Finishing, especially with reference to the Length of these valves. Lightweight valves manufactured in this way are known for example from the publication 2000- 01-0906 of the Society of Automotive Engineers, Inc .: A New Concept For Steel-Composite Leightweight Valves "by Andreas by Kaenel, Peter Grahle and Marcus Abele der Mahle Ventiltrieb GmbH.
Die Erfindung beschäftigt sich mit dem Problem, die Herstellung solcher gattungsgemäßer Leichtbauventile zu vereinfachen, um hierdurch die erforderlichen Herstellungskosten zu senken. The invention addresses the problem that Manufacture of such generic lightweight valves simplify, thereby increasing the manufacturing costs required reduce.
Gelöst wird diese Aufgabe bei einem gattungsgemäßen Verfahren in erster Linie durch die Herstellungsschritte nach den kennzeichnenden Merkmalen des Patentanspruchs 1. This task is solved with a generic Process primarily through the manufacturing steps according to the characterizing features of claim 1.
Vorteilhafte Ausgestaltungen dieses Verfahrens sind Gegenstand der Verfahrens-Unteransprüche. Advantageous embodiments of this method are Subject of the procedural subclaims.
Der auf ein nach dem erfindungsgemäßen Verfahren hergestelltes Gaswechselventil gerichtete letzte Anspruch zeigt eine besonders vorteilhafte Ausführung eines gattungsgemäßen Gaswechselventiles auf. The one according to the inventive method manufactured gas exchange valve directed last claim shows a particularly advantageous embodiment of a generic Gas exchange valves on.
Die Erfindung beruht in erster Linie auf dem allgemeinen Gedanken, ein gattungsgemäßes Leichtbauventil aus einzelnen Teilen paßgenau auf ein vorbestimmtes Längenmaß zu fügen und diese Teile in diesem Zustand miteinander zu verschweißen. Dabei sollen alle bzw. zumindest möglichst viele erforderlichen Bearbeitungen möglichst noch vor dem Fügen erfolgen können, so dass im Idealfall nach dem Fügen und Verschweißen bereits vollständig fertig bearbeiteter Einzelteile keine Nachbearbeitung mehr erfolgen muss. The invention is based primarily on the general Thoughts, a generic lightweight valve made up of individual Parts to fit exactly to a predetermined length and to weld these parts together in this state. All or at least as many as possible necessary processing should be done before joining if possible can, so ideally after joining and welding already fully finished individual parts none Postprocessing needs to be done more.
Ein vorteilhaftes Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt. An advantageous embodiment of the invention is in shown in the drawing.
In dieser zeigen In this show
Fig. 1 einen Längsschnitt durch ein Leichtbau- Gaswechselventil mit einem angesetzten Ventilfeder-Widerlager, Fig. 1 shows a longitudinal section through a lightweight gas exchange valve with an attached valve spring abutment,
Fig. 2 eine Draufsicht auf das Gaswechselventil auf Fig. 1. FIG. 2 is a top view of the gas exchange valve in FIG. 1.
Ein als Leichtbauventil ausgebildetes Gaswechselventil besteht aus einem hohlen Ventilteller 1, einem rohrförmigen Ventilschaft 2 sowie einem das dem Ventilteller 1 gegenüberliegende Ende des Ventilschaftes 2 verschließenden Druckstück 3. Der Ventilschaft 2 ist sowohl mit dem Ventilteller 1 als auch mit dem Druckstück 3 jeweils über einen Schiebesitz verbunden. Die Zuordnung zwischen dem Ventilteller 1 und dem Ventilschaft 2 ist dadurch gegeben, dass der Ventilschaft 2 axial auf Anschlag in dem Ventilteller 1 ausgerichtet ist. Bei dieser Ausrichtung erfolgt die Schweißverbindung zwischen Ventilteller 1 und Ventilschaft 2. A gas exchange valve designed as a lightweight valve consists of a hollow valve plate 1 , a tubular valve stem 2 and a pressure piece 3 closing the end of the valve stem 2 opposite the valve plate 1 . The valve stem 2 is connected to both the valve plate 1 and the pressure piece 3 via a sliding seat. The assignment between the valve plate 1 and the valve stem 2 is given in that the valve stem 2 is axially aligned with the stop in the valve plate 1 . With this alignment, the welded connection between valve plate 1 and valve stem 2 takes place .
Die Zuordnung des Druckstückes 3 zu dem Ventilschaft 2 innerhalb des betreffenden Schiebesitzes erfolgt durch eine auf die Fertiglänge des Gaswechselventiles passgenaue Ausrichtung, nach der die Schweißverbindung als letzter Bearbeitungsschritt erfolgt. Bei dieser Füge- und Verbindungstechnik ist es bei einem Einsatz vollständig fertig bearbeiteter Teile möglich, nach dem Verschweißen der einzelnen Teile keine Nachbearbeitung mehr vornehmen zu müssen. Aber auch, wenn noch einzelne, in den Unteransprüchen näher angegebene Nachbearbeitungen und Wärmebehandlungen erforderlich sind, entfällt in jedem Fall eine zerspanende Längenbearbeitung des Gaswechselventiles nach dessen Herstellung durch das erfindungsgemäße Fügen und Schweißen. The assignment of the pressure piece 3 to the valve stem 2 within the relevant sliding seat takes place by means of an alignment that is precise to the finished length of the gas exchange valve, after which the welded connection takes place as the last machining step. With this joining and connection technology, when fully finished parts are used, it is possible to avoid having to do any post-processing after welding the individual parts. But even if individual post-processing and heat treatment specified in the subclaims are still required, there is no machining lengthwise machining of the gas exchange valve after its production by the joining and welding according to the invention.
Keine Nacharbeit ist insbesondere bei dem Widerlager 4 des Gaswechselventiles für die übliche Ventilfeder erforderlich, wenn dieses Widerlager in dem Druckstück 3 mit einem vorbestimmten Abstand zu dessen freiem Ende, das heißt dessen Anschlagfläche für eine Ventilbetätigungseinrichtung, lagegenau eingebracht ist, bevor das Druckstück 3 mit dem Ventilschaft längengenau verbunden wird. In particular, no rework is required for the abutment 4 of the gas exchange valve for the conventional valve spring if this abutment is inserted in the pressure piece 3 at a predetermined distance from its free end, i.e. its stop surface for a valve actuation device, before the pressure piece 3 with the Valve stem is precisely connected.
Das Widerlager 4 ist an dem Druckstück 3 als eine einfache Ringstufe ausgebildet. Da diese Ringstufe einen definierten Abstand zu dem freien Ende des Druckstückes 3 aufweist, besitzt dieses Widerlager 4 automatisch auch mit Bezug auf die Ventilfeder eine paßgenaue Lage. Eine zwischen dem Widerlager 4 und der nicht gezeichneten Ventilfeder für eine Montierbarkeit der Feder erforderliche Stützeinrichtung 5 kann in üblicher Weise aus einem äußeren Ring 6 sowie einem inneren, umfangsmäßig geteilten Ring 7 bestehen, wobei diese beiden Ringe über eine Konusfläche derart koaxial ineinanderliegen, dass sie sich unter dem Druck der Ventilfeder in dem Widerlager 4 paßgenau abstützen und fixieren können. The abutment 4 is formed on the pressure piece 3 as a simple ring step. Since this ring step has a defined distance from the free end of the pressure piece 3 , this abutment 4 automatically has a precisely fitting position with respect to the valve spring. A support device 5 required between the abutment 4 and the valve spring (not shown) for a mountability of the spring can consist in the usual manner of an outer ring 6 and an inner, circumferentially divided ring 7 , these two rings being coaxially one inside the other via a conical surface such that they can be supported and fixed precisely in the abutment 4 under the pressure of the valve spring.
Der Schiebesitz zwischen dem Druckstück 3 und dem rohrförmigen Schaft 2 ist derart ausgebildet, dass das Druckstück 3 mit einem längenmäßigen Teilbereich in das Innere des Schaftes 2 eingreift, wobei zur Einstellung eines paßgenauen Längenmaßes des Gaswechselventiles das Druckstück 3 innerhalb des Schaftes 2 axial verschiebbar ist. Das Verschweißen zwischen Druckstück 3 und Schaft 2 erfolgt bei paßgenau eingestellter Gesamtlänge des Gaswechselventiles. The sliding seat between the pressure piece 3 and the tubular shaft 2 is designed in such a way that the pressure piece 3 engages with a longitudinal partial area in the interior of the shaft 2 , the pressure piece 3 being axially displaceable within the shaft 2 in order to set a precisely fitting length dimension of the gas exchange valve. The welding between pressure piece 3 and stem 2 takes place with the total length of the gas exchange valve precisely adjusted.
Der Ventilteller 1 kann auch aus Vollmaterial, beispielsweise Leichtmetall oder Keramik bestehen oder aus mehreren Blechteilen zusammengesetzt sein. The valve disk 1 can also consist of solid material, for example light metal or ceramic, or be composed of several sheet metal parts.
Besonders vorteilhaft wird dabei der Ventilschaft 2 mit einerseits dem brennraumseitigen und andererseits dem druckstückseitigen Ende des Ventiltellers 1 verbunden, um die Steifigkeit des Ventiltellers zu verbessern. The valve stem 2 is particularly advantageously connected to the end of the valve plate 1 on the combustion chamber side and on the other hand to the pressure piece side in order to improve the rigidity of the valve plate.
Claims (12)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10256274A DE10256274A1 (en) | 2001-12-27 | 2002-12-03 | Producing method of gas shuttle valve for internal combustion engine involves correctly fitting and permanently bonding valve shaft and thrust section to predetermined length |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10163769 | 2001-12-27 | ||
| DE10256274A DE10256274A1 (en) | 2001-12-27 | 2002-12-03 | Producing method of gas shuttle valve for internal combustion engine involves correctly fitting and permanently bonding valve shaft and thrust section to predetermined length |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE10256274A1 true DE10256274A1 (en) | 2003-07-17 |
Family
ID=7710731
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE10296191T Withdrawn - After Issue DE10296191D2 (en) | 2001-12-27 | 2002-12-03 | Gas exchange valve of an internal combustion engine with a hollow valve disk |
| DE10256274A Withdrawn DE10256274A1 (en) | 2001-12-27 | 2002-12-03 | Producing method of gas shuttle valve for internal combustion engine involves correctly fitting and permanently bonding valve shaft and thrust section to predetermined length |
| DE10257505A Expired - Fee Related DE10257505B4 (en) | 2001-12-27 | 2002-12-10 | Gas exchange valve of an internal combustion engine |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE10296191T Withdrawn - After Issue DE10296191D2 (en) | 2001-12-27 | 2002-12-03 | Gas exchange valve of an internal combustion engine with a hollow valve disk |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE10257505A Expired - Fee Related DE10257505B4 (en) | 2001-12-27 | 2002-12-10 | Gas exchange valve of an internal combustion engine |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6935296B2 (en) |
| EP (1) | EP1327752A1 (en) |
| DE (3) | DE10296191D2 (en) |
| WO (1) | WO2003056142A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013210897A1 (en) * | 2013-06-11 | 2014-12-11 | Mahle International Gmbh | Method for producing a built-up hollow valve of an internal combustion engine |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10354074B4 (en) * | 2003-11-19 | 2006-01-26 | Daimlerchrysler Ag | lightweight valve |
| DE10354077B4 (en) | 2003-11-19 | 2005-10-20 | Daimler Chrysler Ag | lightweight valve |
| DE10354086B4 (en) | 2003-11-19 | 2005-11-24 | Daimlerchrysler Ag | lightweight valve |
| DE10354085B4 (en) | 2003-11-19 | 2005-11-24 | Daimlerchrysler Ag | lightweight valve |
| DE10354076B4 (en) * | 2003-11-19 | 2006-03-09 | Daimlerchrysler Ag | lightweight valve |
| DE102004010309A1 (en) * | 2004-03-03 | 2005-09-22 | Mahle Ventiltrieb Gmbh | Gas exchange valve of an internal combustion engine |
| US7240895B2 (en) | 2004-03-03 | 2007-07-10 | Mahle Ventiltrieb Gmbh | Gas exchange valve for an internal combustion engine |
| DE102004063518B4 (en) * | 2004-12-30 | 2006-12-14 | Josef Lehle | Method for producing a cone for a valve and a valve |
| DE102005027130A1 (en) | 2005-06-11 | 2006-12-14 | Mahle International Gmbh | Gas exchange valve of an internal combustion engine |
| JP4390291B1 (en) | 2008-09-18 | 2009-12-24 | 株式会社 吉村カンパニー | Method for manufacturing valve head part of hollow engine valve and hollow engine valve |
| USD679732S1 (en) * | 2011-03-28 | 2013-04-09 | Charter Manufacturing Co., Inc. | Spring retainer |
| DE102013210899A1 (en) | 2013-06-11 | 2014-12-11 | Mahle International Gmbh | Method for producing a built-up hollow valve |
| DE102013210900A1 (en) * | 2013-06-11 | 2014-12-11 | Mahle International Gmbh | Gas exchange valve of an internal combustion engine |
| CN104924028B (en) * | 2015-05-15 | 2017-06-20 | 北京科技大学 | A kind of automobile engine hollow valve blank accurate forming method of application plug |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2119042A (en) * | 1937-12-20 | 1938-05-31 | Eaton Mfg Co | Valve |
| US2398514A (en) * | 1944-10-14 | 1946-04-16 | Wilhelm B Bronander | Internal-combustion engine |
| DE910492C (en) * | 1951-10-03 | 1954-05-03 | Wilhelm Schmidt | Hollow poppet valve |
| FR2158654A5 (en) * | 1971-10-27 | 1973-06-15 | Semt | |
| IT990257B (en) * | 1972-08-18 | 1975-06-20 | Maschf Augsburg Nuernberg Ag | PROCEDURE FOR THE PRODUCTION OF A VALVE FOR VALVE ENGINES SO OBTAINED |
| DE2441689A1 (en) * | 1974-08-30 | 1976-03-11 | Maschf Augsburg Nuernberg Ag | DEVICE FOR COOLING VALVES, IN PARTICULAR EXHAUST VALVES FOR COMBUSTION MACHINERY |
| JPS57210112A (en) * | 1981-06-20 | 1982-12-23 | Toyota Motor Corp | Valve for engine of vehicle and method of manufacturing said valve |
| JPS643007U (en) * | 1987-06-25 | 1989-01-10 | ||
| DE4024084A1 (en) * | 1989-11-29 | 1991-06-06 | Daimler Benz Ag | METHOD FOR PRODUCING HOLLOW GAS EXCHANGE VALVES FOR LIFTING PISTON MACHINES |
| DE19728479C2 (en) * | 1997-07-05 | 2001-08-30 | Daimler Chrysler Ag | Device for actuating a gas exchange valve with an electromagnetic actuator |
| DE19803294A1 (en) * | 1998-01-29 | 1999-08-05 | Mwp Mahle J Wizemann Pleuco Gm | Cavity gas exchange valve |
| DE19804053A1 (en) * | 1998-02-03 | 1999-08-05 | Mwp Mahle J Wizemann Pleuco Gm | Lightweight valve |
| DE19920176C2 (en) | 1999-05-03 | 2003-02-13 | Josef M Neger | Aerodynamic valve |
-
2002
- 2002-12-03 DE DE10296191T patent/DE10296191D2/en not_active Withdrawn - After Issue
- 2002-12-03 WO PCT/DE2002/004406 patent/WO2003056142A1/en not_active Ceased
- 2002-12-03 DE DE10256274A patent/DE10256274A1/en not_active Withdrawn
- 2002-12-03 EP EP02027036A patent/EP1327752A1/en not_active Withdrawn
- 2002-12-10 DE DE10257505A patent/DE10257505B4/en not_active Expired - Fee Related
- 2002-12-19 US US10/323,068 patent/US6935296B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013210897A1 (en) * | 2013-06-11 | 2014-12-11 | Mahle International Gmbh | Method for producing a built-up hollow valve of an internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10257505B4 (en) | 2004-07-15 |
| EP1327752A1 (en) | 2003-07-16 |
| US6935296B2 (en) | 2005-08-30 |
| US20030121488A1 (en) | 2003-07-03 |
| WO2003056142A1 (en) | 2003-07-10 |
| DE10257505A1 (en) | 2003-07-17 |
| DE10296191D2 (en) | 2003-12-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8141 | Disposal/no request for examination |